Cosmology
The age of the universe.
What is 13.8 billion years.
Our Milky Way is this type of galaxy.
What is a barred spiral?
He measured the size of the Earth using shadows, a stick and trigonometry.
Who is Eratosthenes?
The smallest planet.
What is Mercury?
These are the most common type of stars.
What are red dwarfs?
The name given to the start of the universe.
What is the Big Bang.
Barred and normal are this type of galaxy.
What are spiral galaxies.
He measured the orbit of Mars, had a tin nose and a pet Elk-Moose.
Who was Tycho Brahe?
Long period comets come from here.
What is the Oort Cloud?
In the HR diagram, 90% of all stars are found in this strip.
What is the Main Sequence?
These are the two most abundant elements in the universe.
What are hydrogen and helium.
The process where a larger galaxy tidally consumes another.
What is galactic cannibalism?
He built the first reflecting telescope.
Who was Isaac Newton?
This is by far the largest planet.
What is Jupiter?
Emission, reflection and dark are examples of this.
What are nebulae?
In this theory, the expansion of space continues to speed up.
What is the Big Rip.
The name of the small group of galaxies that the Milky Way belongs to.
What is the Local Group of Galaxies?
Known for his work on black holes and time.
Who is Stephen Hawking?
In 2006, the IAU reclassified this former planet.
What is Pluto?
These are found in the center of every large galaxy?
What are black holes?
This is the invisible force that is driving the expansion of the universe.
What is dark energy?
In around 4 billion years, the Milky Way will collide with this large galaxy.
What is the Andromeda Galaxy?
This astronomer produced a classification system of galaxies that is still in use today.
Who is Edwin Hubble?
This planet was discovered in 1846 through its gravitational perturbations on Uranus.
What is Neptune?
The name of the destructive even that blows apart massive stars at the end of nuclear fusion.
What is a supernova?